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Coordinated control method for frequency modulation of large-scale electric automobile auxiliary power grid

An electric vehicle, coordinated control technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problems of local power grid load supply shortage, power grid impact, increase system load level, etc., to quickly restore normal operation level, guarantee The effect of safe and stable operation

Inactive Publication Date: 2014-12-24
湖南智仁科技有限公司
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Problems solved by technology

The random and disorderly connection of a large number of electric vehicles to the power grid will inevitably increase the load level of the system, causing local power grid load supply tension, and bringing negative impacts to the power grid

Method used

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  • Coordinated control method for frequency modulation of large-scale electric automobile auxiliary power grid
  • Coordinated control method for frequency modulation of large-scale electric automobile auxiliary power grid
  • Coordinated control method for frequency modulation of large-scale electric automobile auxiliary power grid

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] Refer to attached figure 1 , the distribution network dispatching center is responsible for real-time monitoring and division of the power system operating status, in large-scale interconnected systems AGC It is an important means to control the frequency of the system and the exchange power of inter-regional tie lines to operate as planned. The frequency deviation control of tie lines ( TBC ) is a more reasonable frequency control mode in large power grid operation. In this mode frequency deviation and tie line power deviation work as area control deviation ( ACE ) calculation amount. If the power grid encounters a disturbance, pass AGC Detect and judge the operating status, frequency and power balance of the power grid, carry out power distribution with the cooperation of coordinated control strategies, and transmit the distribution res...

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Abstract

The invention discloses a coordinated control strategy for frequency modulation of a large-scale electric automobile auxiliary power grid. According to the coordinated control strategy for frequency modulation of the large-scale electric automobile auxiliary power grid, power grid operating states are divided into five types, namely a normal state, an early warning state, an emergency state, an ultimate state and a recovery state. According to the practical situation of a power grid and by combining the advantage of accurate and rapid response of an electric automobile, reasonable response control strategies are made to adapt to different operating states, so that the purpose of coordinated response between the electric automobile and a power grid frequency modulation device is achieved. The control strategies correspond to different response thresholds and response range values according to the disturbance intensity of the power grid, and the change trend of the frequency of the power grid can be judged and the response strategies can be dynamically adjusted according to frequency deviation signals of the power grid.

Description

technical field [0001] The invention relates to a coordinated control method for large-scale electric vehicle auxiliary power grid frequency regulation. Background technique [0002] The environmental pollution and energy crisis caused by the massive consumption of petroleum resources have become the focus of attention of countries all over the world. Energy saving and emission reduction and energy development have pushed electric vehicles onto the stage of history. The stable operation of the system provides a new method. The random and disorderly connection of a large number of electric vehicles to the power grid will inevitably increase the load level of the system, causing local power grid load supply tension and bringing negative impacts to the power grid. However, with the development of energy storage technology, motor and its control technology, electric vehicles are not only requesters of electricity, but also active participants who can provide voltage regulation,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
Inventor 曹小明魏靖
Owner 湖南智仁科技有限公司
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